.whatsapp {
    position: fixed;
    width: 64px;
    height: 64px;
    bottom: 20px;
    right: 20px;
    animation: float 10s ease-in-out infinite;

    z-index: 900;
}
.whatsapp img {
    width: 100%;
    height: auto;

    -webkit-filter: drop-shadow(1px 1px 3px rgba(0,0,0,0.2));
}

@keyframes float {
	0% {

		transform: translatey(0px);
	}
	50% {

		transform: translatey(-20px);
	}
	100% {

		transform: translatey(0px);
	}
}